Timer.



' A. Sv. KROTZ,

TIMER.

APPLIUATION FILED PEB. 2a; 1907.

930, 196. l u PaenteaAug. 3, 1909.

r N l l 'lf Mlm N unifi Cil 'marini UNITED sTA'rns TIMER.

Specification of Letters Patent'.

rarnnfr orme.

ALVARO S. KltO'lZ, OI" CHICAGO, lLLliYO-IS.

Patented Aug. 3, 1909.

Appliation filed February 28, 19W. Serial No. 359,778.

To all 107mm 'it muy concern:

.Be it krimvn that l, davano Know, a

citizen of the United ttates of America, and.. a resident of Chicago,iii the county of (look and State of Illinois, have invented certain newand useful lmproveiiients in YTin'iers, ol nhich the following is aspecification.

'this invention relates to timer mechan- .isms used in coiincctioi'i`with the electric sparking systems of explosion engines, and has forits object to provide simple and ciiicicnt structural formation andcombination of parts adapted to ailord a very cxtended and effectiveelectrical contact, with f but little incidental frictional wear,between broken awa f of a timer mechanism embed y l ing the .presentinvention. 2, is a longitudinal section of the saine on line 2 2,Fig. 1. Fig. 3, is a detail longitudinal section of a modification. l

Similar numerals of reference indicate like parts in the differentviews.

Referring to the drawings, 1. is the end por V tion of the usual shaftfrom which rotation is imparted to the distributing member of the timermechanism. 2, is the carrying` arbor of the distributing member, securedin longitudinal` aliiiemcnt to the driving shaft 1. in any usualniaini'cr which will permit of convenient disengagement when desired;inthe dr.-i'.':ingI said arbor is 'shown )Irovidcd Awith a tubularsleeve 3 at its end adapted to lit over thev end ol' the shaft 1, andsecured in place by a sct screw 4, or other usual fastening means. A5,is the distributing member ol lhc liincr mechanism above rflerrcd to,and which in the presciit iniiln'ovcinrni comprises a stem formed with aconical or tapered outer end and attached in a transverse dircl'l ion inthe l'orwai'd end ol the arbor 2, prcl'crably in a radially adjustablemanner.

.means shownin the drau'ingigaml in which llnA ei'ywliich iitsacorresponding citant hrcndcd orihcc extending transversely through thcln alainingi such radial adjustment :niv usual means ma)v l be employed;prcl'crcnr-c is hoivi-vcr I'ivcn lo arbor E as shown. '.lfl'ie end olsaid arbor is lorincd with a longitudinal slit 5 Which ex tends throughthe scrovi-threaded orifice 2li; scie.vs through the split ends ol' thearbor thus l'orii'icd to clamp the saine upon thestein 5 to hold thesame at the required 4adjustment in a iirin and substantial manner.

S, is a non-circular head on the stein 5 vfor convenience in cllccting amanual adjustnient oll the saine.

series ol' contacts oll the timer mechanism;

end heading 11. ol' the casing, and an interposed bushing l2 havingbearing upon the arbor 2 as shown. The casing Q will be provided Withthe usual radial arm or equivaient device, whereby a partial rotationoi' the casing and the series of contacts carried desired adjustment, asusual in the present 'type oltinier mechanisms.

13, a cover fitting the forward end of the casiiig.) to Yforni a dustprooi' inclosure 'lor the mechanism.

sulat'ed manner in the end head 11 of the casingl 9 alorosaid, by meansoll iixed collars 15, bearingwashers 1G and 17 and interposed bushings18 ol' insulating material as shown inllig. 1.

10 are hook shaped terminals on the rear l Washers 17 l'or theconvenient attachment ol' the line wires oll the sparking circuit.

El) arf.l disks ol conducting n'iaterial arranged looselyupon the stein14 and resting upon i 'elast ic cushions or springs 21 interposed between said disks and the 'lined collars 15 ol' said stems as shown. lnthe present iniprovcinent such disks are l'ornied 'with beveled orconical pcripheries correspondiijig with the taper ol' the outer endsol' the dis tribiitiiigstcin 5 a l'orcsaid, and adapted in thedistributing stem to contact and establish electrical connectionbetweenl the parts. with the described arrangement ol' the disks 2l),thc saine are l'icc to rotate, t0 tilt and to inovcI hnigtudinallyY uponthe stems 14 against the stress ol' the springs 21, and in fconsmpui'icc a very cll'cctnfe electrical connection if: had with butlittle l'rictional Wear between theparts, in that Ithe disks have a lturning inoven'iclit along with the distribut- 'orcs-,anh and atransverse clamping bolt 7 ,o

9, a cup shaped casing carrying the" such casing is held in concentricrelation tothe arbor 2 by means of a hub' 10, on therear l thereby, isell'ected and the parts held at the 14,` area series ol' stems securedin an inorbital movement ol'l such outer end ol' the i 'inner disk20,-beiore described, to provide angular channels between the pairs ol'disks for the reception or" the conical. or tapering outer end ol' thedistributing stem 5, with Aa view to afford a very extended lelectricalcontact between the parts. 23 are removable collars or keys at the'outer -ends ol' the stems 14;v and 24 are elastic cushions or springsinterposed between said collars or keys and the disks 22 lor yieldinglyholding; the said disks against the companion disks 2() beforedescribed.

Having` thus fully described my tion what I claim as new and desiretosecure by Letters Patent is '1. In a timer, the combination et' anarbor, a distributing' member consisting oi' a lateral stein carried bysaid arbor and formed with a tapering outer end, a casing;v carrying aseries of contacts, each contact con'iprising a supporting stein carriedby said casing', and a Contact disk 'having' a larger bore than Aitssupportingfstem to provide a tiltingT well as a lateral movement of thedisk` said disk having` a beveled periphery, and an elastic abutment'l'or said disk, substantially as set forth.

2. In a timer, the combination oll an arbor.

a distributing' member eonsistin ol' a lateral outer end, a casing;carrying; a series ol' contacts, each. contact conn'n'ising asul'iportinn` stern carried. by said casing, and a contact .diskhaving,r a larger bore than its supporting i stem to provide a tilting'as well as a lateral movement ol the disk, said disk having' a beveledperiphery, and an elastic abutment for said disk, substantially as setforth.

ln a timer, the conibinatimi oll an arbor, a distributing' memberconsisting ol' a lateral stein having; a tapering` outer end and ascreW-threznled periphery iittiiig a screw threaded orilice formedtransversely in said arbor, the said arbor having' a loinritudinal slitat its forward end intersecti ng said screwthreaded orifice, atransverse clamping' bolt arranged in tbeouter part of said arbor, a 6`casing' carrying; a series of contacts, each contact comprising asupporting stein carried by said casing', and a Contact disk having alarger bore thainits supporting` stem to provide a tilting` as Well as alateral movement 6 ol" the disk, said disk having a beveled periphery,and an elastic abutment lor said disk, substantially as set forth. y

4. ln a timer, the combination of an arbor, distributing member'consisting of a'lateral 7 stern carried by said arbor and l'orlned Witha tai'fering outer end, a casiifg carrying a series olI contacts, cachcontact comprising a supporting stein carried by said casing, and a pairel contact disks having' bores larger 7'` than their supporting stein toprovide a tilting as well as a lateral movement ol' the disks, saiddisks having beveled peripheries, and elastic ab utinents for saiddisks, substantially as set iorth.

5. ln a timer, the combination olan arbor, a distrioutingvineinber'consisting of a-lateral stein. carried in a radially adjustablemanner by said arbor and l'crincd with a tapering' outer end, a` casing;carrying,` a series oi' con- 8` tacts, each contact coniprising; asupporting' stem. carried by said casing, and a pair ot' contact diskshaving` bores larger than their supporting' stein to provide a tilting'as Well as a lateral inovenient of the di its, said' 9 disks havingbeveled peripl'ieries, and elastic abutn'ients 'lor disks, substantiallyas set forth.

(i. i i a timer, the condiiinitiini o'lI an arbor, a disirbutiiug memberconsislinn' oll a lateral. 9 stein. having' a tapering outer end and asercwdhl'ciulcd periphery littiiu;l a screw threaded orifice lorinedtransversely in Isaid arbor, the said -arbor having' a longitudinal slitat its l'orward end intorsectiner said screwl threaded orifice, atransverse clarnl'iini'bolt arranged in the outer part ol" said arbor, acasing' carrying a series ol' contacts, each contact comprising asupporting' stein carried by said casing', and a pair of contact diskshav- 14 ing; bores larger than tilieir sul'iporting stein to provide 'atilting aswell as a lateral inove nient oll the disks, i aid diskshaving beveled peri'iherics, and elastic abutments l'or said disks,substantially as set forth. l

Signed at Chicago, illinois this 19th day ol February 1907.

' ALVARO S. KROTZ.

l'v'itnesses: v

.Konmar Beans, HENRY Mon.

